Aluminum alloy conductive wire, electrical wire and wire harness using the same

Abstract

An aluminum alloy conductive wire that includes 0.15 mass % or more and 0.25 mass % or less of Si; 0.6 mass % or more and 0.9 mass % or less of Fe; 0.05 mass % or more and 0.15 mass % or less of Cu; 0.2 mass % or more and 2.7 mass % or less of Mg, and 0.03 mass % or less in total of Ti, V, and B. The aluminum alloy conductive wire has tensile strength of equal to or less than T1 MPa represented by T1=59.5 ln(x)+231 and conductivity of equal to or more than C % IACS represented by C=1.26x2−11.6x+63.4 in a case where a content rate of Mg in the aluminum alloy conductive wire is x mass %.

The invention claimed is: 
     
       1. An aluminum alloy conductive wire, comprising:
 0.15 mass % or more and 0.25 mass % or less of Si, 
 0.60 mass % or more and 0.90 mass % or less of Fe, 
 0.05 mass % or more and 0.15 mass % or less of Cu, 
 0.46 mass % or more and 2.70 mass % or less of Mg, and 
 0.03 mass % or less in total of Ti, V, and B, 
 wherein the aluminum alloy conductive wire has tensile strength of equal to or less than Ti MPa represented by formula (1) below and conductivity of equal to or more than C % IACS represented by formula (2) below in a case where a content rate of Mg in the aluminum alloy conductive wire is x mass %,
     T   1 =59.5 ln( x )+231  (1)
 
     C= 1.26 x   2 −11.6 x+ 63.4  (2),
 
 
 wherein a content of Ti is less than 0.001 mass %, and 
 wherein the tensile strength is equal to or more than T 2  MPa represented by formula (3) below in a case where the content rate of Mg in the aluminum alloy conductive wire is x mass %,
     T   2 =60.5 ln( x )+176  (3).
 
 
 
     
     
       2. The aluminum alloy conductive wire according to  claim 1 , wherein the content rate of Mg in the aluminum alloy conductive wire is 0.46 mass % or more and 1.45 mass % or less,
 a content rate of Si in the aluminum alloy conductive wire is 0.17 mass % or more and 0.25 mass % or less, and 
 only Ti among Ti, V, and B is contained in the aluminum alloy conductive wire. 
 
     
     
       3. An electrical wire, comprising the aluminum alloy conductive wire according to  claim 1 . 
     
     
       4. A wire harness, comprising a plurality of electrical wires according to  claim 3 . 
     
     
       5. The aluminum alloy conductive wire according to  claim 1 , wherein a content rate of Fe in the aluminum alloy conductive wire is 0.68 mass % or more and 0.82 mass % or less. 
     
     
       6. The aluminum alloy conductive wire according to  claim 1 , wherein a content rate of Cu in the aluminum alloy conductive wire is 0.06 mass % or more and 0.12 mass % or less. 
     
     
       7. The aluminum alloy conductive wire according to  claim 1 , wherein the content rate of Mg in the aluminum alloy conductive wire is 0.46 mass % or more and 2.00 mass % or less. 
     
     
       8. The aluminum alloy conductive wire according to  claim 1 , wherein a total content rate of Ti, V, and B in the aluminum alloy conductive wire is 0.01 mass % or less.